A rod end bearing comprising a body comprising a ring portion and a rod portion. The ring portion comprises a ring having an opening, the opening having a center axis. The rod portion comprises a first rod extending radially from the ring in a direction perpendicular to the center axis. The opening
A rod end bearing comprising a body comprising a ring portion and a rod portion. The ring portion comprises a ring having an opening, the opening having a center axis. The rod portion comprises a first rod extending radially from the ring in a direction perpendicular to the center axis. The opening having a geometry sufficient to support a substantially spherical ball bearing, and permit rotation of the ball bearing inside the ring. The inner periphery of the ring is in contact with the ball bearing and includes a wear coating. An antifriction coating is disposed on a surface selected from the group consisting of a surface of the wear coating, a surface of the ball bearing and combinations thereof. The antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of up to about 0.95 in atmospheres substantially devoid of water vapor.
대표청구항▼
What is claimed is: 1. A rod end bearing comprising: a body comprising a ring portion and a rod portion; the ring portion comprising a ring having an opening and a center axis; the rod portion comprising a first rod extending radially from the ring in a direction perpendicular to the center axis; t
What is claimed is: 1. A rod end bearing comprising: a body comprising a ring portion and a rod portion; the ring portion comprising a ring having an opening and a center axis; the rod portion comprising a first rod extending radially from the ring in a direction perpendicular to the center axis; the opening having a geometry sufficient to support a ball bearing, and permitting rotation of the ball bearing inside the ring, the ball bearing being substantially spherical and being capable of attachment to a second rod; an inner periphery of the ring being in contact with the ball bearing; a wear coating on at least a portion of the inner periphery of the ring; and an antifriction coating disposed on a surface selected from the group consisting of a surface of the wear coating, a surface selected from the group consisting of a surface of the wear coating, a surface of the ball bearing and combinations thereof, the antifriction coating maintaining a coefficient of friction between the wear coating and the ball bearing of up to about 0.95 atmospheres substantially devoid of water vapor. 2. The rod end bearing of claim 1, wherein the body comprises two or more parts, each of the parts being substantially planar plates, each plate including the rod portion and the ring portion, the two or more parts being fastened together supporting the ball bearing within the ring portion of the two or more parts and places the inner periphery of the ring portion of each of the parts in contact with the surface of the ball bearing. 3. The rode end bearing of claim 1, wherein the body comprises a material having a thermal coefficient of expansion greater than the thermal coefficient of expansion of the ball bearing. 4. The rod end bearing of claim 1, wherein the antifriction coating comprises a binder and a friction modifier. 5. The rod end bearing of claim 4, wherein the binder comprises a material selected from the group consisting of sodium silicate, aluminum phosphate, titanium oxide and combinations thereof. 6. The rod end bearing of claim 5, wherein the binder is titanium oxide. 7. The rod end bearing of claim 4, wherein the friction modifier comprises a material selected from the group consisting of tungsten sulfide, bismuth telluride, copper sulfide, bismuth oxide and combinations thereof. 8. The rod end bearing of claim 7, wherein the friction modifier is tungsten sulfide. 9. The rod end bearing of claim 1, wherein the ball bearing comprises a material selected from the group consisting of tungsten carbide, silicon nitride, zirconium oxide, cobalt-chromium-molybdenum alloys and combinations thereof. 10. The rod end bearing of claim 9, wherein the ball bearing comprises silicon nitride. 11. The rod end bearing of claim 1, wherein the wear coating comprises a material selected from the group consisting of tungsten carbide, cobalt-containing tungsten carbide, titanium nitride and combinations thereof. 12. The rod end bearing of claim 1, wherein the wear coating comprises cobalt-containing tungsten carbide. 13. The rod end bearing of claim 1, wherein the wear coating comprises titanium nitride. 14. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.95 in atmospheres substantially devoid of water vapor. 15. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.6 in atmospheres substantially devoid of water vapor. 16. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.95 at temperatures greater than or equal to about 1000° F. 17. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.6 at temperatures greater than or equal to about 1000° F. 18. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.95 at temperatures greater than or equal to about 1200° F. 19. The rod end bearing of claim 1, wherein the antifriction coating maintains a coefficient of friction between the wear coating and the ball bearing of equal to or less than 0.6 at temperatures greater than or equal to about 1200° F. 20. The rod end bearing of claim 1, wherein the rod end bearing wears less than 0.005 inches over 2 million reciprocations of the ball bearing within the ring portion.
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